Add To Do notes.
Simplify Celery restart command in Fabric script.
Added in a CELERY_DOWN_STATUS and TIMEOUT_STATUS and associated pages to help us pinpoint what section of code is causing Ilya's computer to trigger the persistent Celery error.  Depending on what we decide, these statuses may be rolled back in the future.
[#61412048] Add logging statements to check_tool_status().
Merge branch 'develop' of github.com:parklab/refinery-platform into develop

Conflicts:
	refinery/core/tasks.py
Change print to logging statements.
Replace STATIC_URL variable with static template tag.
Added ALLOWED_HOSTS setting so Django 1.5 will run without throwing a 500 error when DEBUG=False
Update default value for ALLOWED_HOSTS in settings.py.
Added an expiration time on the ExternalTool periodic tasks and their subtasks to avoid tying up the concurrent task slots with periodic tasks that can't return because their subtasks can't run
Merge branch 'develop' of github.com:parklab/refinery-platform into develop
Added configuration for Solr logging. Set default log level for Solr to WARN.
Merge branch 'develop' of github.com:parklab/refinery-platform into develop
Added default Solr logging properties.
Renamed logging properties file
Delete solr_jetty_logging.properties
first integration